Liopleurodon is an aggressive aquatic mob. If you are near one in the water, be warned, they will attack you even if unprovoked. They hunt squid, nautilus, and coelacanth as prey. They are untamable but can still be hand-fed. They do not suffocate on land, but their eggs must be placed in water to hatch.

Liopleurodon breed every 5 minutes. The breeding probability is determined by how many individuals are nearby.